Radio anchor Sang Wan uses his voice to cure countless insomniacs, but he himself falls into the abyss of insomnia. When a mysterious phone call broke her lonely ritual, psychiatrist Lu Jingshen opened the door to her heart with the sentence "You have slept with so many people good night, why can't you sleep?" Two souls meet in the middle of the night, exploring the trauma and redemption behind insomnia. In the intertwining of "good night", they look for the starlight in the darkness and the possibility of mutual healing.
